CRIS: Drop support for the CRIS port

The port was added back in 2000 so it's no longer even a good source
of inspiration for newer ports (if it ever was)

The last SoC (ARTPEC-3) with a CRIS main CPU was launched in 2008.

Coupled with time and working developer board hardware being
in low supply, it's time to drop the port from Linux.

So long and thanks for all the fish!

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 134 deletions

diff --git a/arch/cris/arch-v10/kernel/traps.c b/arch/cris/arch-v10/kernel/traps.c
deleted file mode 100644
index 876d45b957f4..000000000000
--- a/arch/cris/arch-v10/kernel/traps.c
+++ /dev/null
@@ -1,134 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Helper functions for trap handlers
- *
- * Copyright (C) 2000-2007, Axis Communications AB.
- *
- * Authors:   Bjorn Wesen
- *            Hans-Peter Nilsson
- *
- */
-
-#include <linux/ptrace.h>
-#include <linux/uaccess.h>
-#include <linux/sched/debug.h>
-
-#include <arch/sv_addr_ag.h>
-#include <arch/system.h>
-
-void
-show_registers(struct pt_regs *regs)
-{
-	/*
-	 * It's possible to use either the USP register or current->thread.usp.
-	 * USP might not correspond to the current process for all cases this
-	 * function is called, and current->thread.usp isn't up to date for the
-	 * current process. Experience shows that using USP is the way to go.
-	 */
-	unsigned long usp = rdusp();
-
-	printk("IRP: %08lx SRP: %08lx DCCR: %08lx USP: %08lx MOF: %08lx\n",
-	       regs->irp, regs->srp, regs->dccr, usp, regs->mof);
-
-	printk(" r0: %08lx  r1: %08lx   r2: %08lx  r3: %08lx\n",
-	       regs->r0, regs->r1, regs->r2, regs->r3);
-
-	printk(" r4: %08lx  r5: %08lx   r6: %08lx  r7: %08lx\n",
-	       regs->r4, regs->r5, regs->r6, regs->r7);
-
-	printk(" r8: %08lx  r9: %08lx  r10: %08lx r11: %08lx\n",
-	       regs->r8, regs->r9, regs->r10, regs->r11);
-
-	printk("r12: %08lx r13: %08lx oR10: %08lx  sp: %08lx\n",
-	       regs->r12, regs->r13, regs->orig_r10, (long unsigned)regs);
-
-	printk("R_MMU_CAUSE: %08lx\n", (unsigned long)*R_MMU_CAUSE);
-
-	printk("Process %s (pid: %d, stackpage=%08lx)\n",
-	       current->comm, current->pid, (unsigned long)current);
-
-	/*
-	 * When in-kernel, we also print out the stack and code at the
-	 * time of the fault..
-	 */
-	if (!user_mode(regs)) {
-		int i;
-
-		show_stack(NULL, (unsigned long *)usp);
-
-		/*
-		 * If the previous stack-dump wasn't a kernel one, dump the
-		 * kernel stack now.
-		 */
-		if (usp != 0)
-			show_stack(NULL, NULL);
-
-		printk("\nCode: ");
-
-		if (regs->irp < PAGE_OFFSET)
-			goto bad_value;
-
-		/*
-		 * Quite often the value at regs->irp doesn't point to the
-		 * interesting instruction, which often is the previous
-		 * instruction. So dump at an offset large enough that the
-		 * instruction decoding should be in sync at the interesting
-		 * point, but small enough to fit on a row. The regs->irp
-		 * location is pointed out in a ksymoops-friendly way by
-		 * wrapping the byte for that address in parenthesises.
-		 */
-		for (i = -12; i < 12; i++) {
-			unsigned char c;
-
-			if (__get_user(c, &((unsigned char *)regs->irp)[i])) {
-bad_value:
-				printk(" Bad IP value.");
-				break;
-			}
-
-			if (i == 0)
-				printk("(%02x) ", c);
-			else
-				printk("%02x ", c);
-		}
-		printk("\n");
-	}
-}
-
-void
-arch_enable_nmi(void)
-{
-	asm volatile ("setf m");
-}
-
-extern void (*nmi_handler)(struct pt_regs *);
-void handle_nmi(struct pt_regs *regs)
-{
-	if (nmi_handler)
-		nmi_handler(regs);
-
-	/* Wait until nmi is no longer active. (We enable NMI immediately after
-	   returning from this function, and we don't want it happening while
-	   exiting from the NMI interrupt handler.) */
-	while (*R_IRQ_MASK0_RD & IO_STATE(R_IRQ_MASK0_RD, nmi_pin, active))
-		;
-}
-
-#ifdef CONFIG_DEBUG_BUGVERBOSE
-void
-handle_BUG(struct pt_regs *regs)
-{
-	struct bug_frame f;
-	unsigned char c;
-	unsigned long irp = regs->irp;
-
-	if (__copy_from_user(&f, (const void __user *)(irp - 8), sizeof f))
-		return;
-	if (f.prefix != BUG_PREFIX || f.magic != BUG_MAGIC)
-		return;
-	if (__get_user(c, f.filename))
-		f.filename = "<bad filename>";
-
-	printk("kernel BUG at %s:%d!\n", f.filename, f.line);
-}
-#endif